热力管道敷设方式中,半通行地沟一般净高为1.2~1.4m,通道净宽0.5~0.6m,长度超过60m应设()。
A.检修出入口
B.入孔
C.检查井
D.导向支架
参考答案:A
根据所给汉语提示完成句子
1.What were you doing when you _________ _________ (听说) the accident?
2. My plane to Shanghai will _________ _________ (起飞) in an hour.
3. _________ _________(并非所有的) girls are afraid of snakes.
4. Our city has been famous _________ _________ (在历史上).
5. The old man _________ _________ (被杀)in a terrible accident.
钳工在台虎钳上进行强力作业时,应使力量朝向台虎钳的活动钳身。